Andrea Seba Les1, Janice J. Yeung2, Geoffrey M. Schultz2, Robert J. Herfkens3, Ronald L. Dalman2, Charles A. Taylor
1Bioengineering, Stanford University, Stanford, CA, USA; 2Department of Vascular Surgery, Stanford University; 3Radiology, Stanford University
We used a cardiac-gated cine FIESTA sequence to measure luminal deformation, circumferential Green-Lagrange strain (E&[theta]&[theta]) and pressure-strain elastic modulus (Ep) at the supraceliac (SC), infrarenal (IR), and mid-aneurysm (MA) locations in fourteen men with abdominal aortic aneurysm. E&[theta]&[theta] and Ep were statisically significantly different between the SC and MA (p<0.00001 and p<0.0005) and IR and MA locations (p<0.0005 and p<0.0005). The deformations (SC, 1.670.38 mm; IR, 1.150.29 mm; MA 0.880.25 mm) were statistically significantly different between all locations. The Ep at the MA location was similar to values obtained via ultrasound.